Watch-bow fastener



(No Model.)

0. F. 'MO'RRILL. WATCH BOW FASTENER.

No. 441,4e4. Patented Nov. 25. 1890.

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UNITED STATES PATENT OFFICE.

CHARLES F. MORRILL, OF BOSTON, MASSACHUSETTS.

WATCH-BOW FASTENEFi.

SPECIFICATION forming part of Letters Patent No. 441,434, dated N ovember 25, 1890.

' Application filed April 3, 1890. Serial No. 346,483, (No model.)

To a/ZZ whom it may concern.-

Be it known that 1, CHARLES F. MORRILL, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Watch Oase Bows and Pendants, of which the following is a specification.

- This invention has for its object to provide improved means for securing the bow to a watch-case pendant. The usual method of connecting pendant bows to pendants is by springing the ends of the bow into sockets formed for their reception in the sides of the pendant, the resiliency of the metal being relied upon to retain the ends of the bow in the sockets. It is therefore not a difficult matter to remove the bow from the pendant by the application of twisting force sufficient to spring the endsof the bow out from their sockets, and this manner of removing the bow is rendered perfectly easy by reason of the fact that the ends of the bow that project into the sockets in the pendant usually have the same curvature as the main portion of the bow, the entire bow, including the ends that enter the sockets, being a metal ring.

My invention consist-s in certain improvements in the form of the bow, whereby when the bow is in place its ends are forced more firmly into the receiving-sockets in the pendants by the application of pulling force upon the bow, such as would be exerted in pulling violently on the chain, so that the tendency of the ends of the bow is to enter their sockets, rather than to leave them, when force is exerted upon the central portion of the bow or at a point midway between the ends thereof.

The invention also consists in the provision of shoulders or collars upon the bow near its ends that are inserted in the sockets, said shoulders being adapted to bear upon the external surfaces of the pendant and prevent undue wear of the ends of the bow upon the bottom or inner ends of the sockets which receive them, said shoulders by their contact with the surfaces of the pendant sustaining a part of the friction which is caused by the swinging of the bow upon the pendant.

The invention also consists in the combination, with the pendant and with a bow formed as above indicated, of a positive securing device engaged with the inner ends of the bow nected, but without the fastening device with-' in the pendant. Fig. 4 represents a sectional View of the pendant and bow, showing the fastening device in place within the pendant and engaged with the ends of the bow. Fig. 5 represents a perspective view of the fastening device shown in section in Fig. 4-. Fig. 6 represents a transverse section of said fastening device. Fig. 6 represents one of the bow ends as formed to engage the fastening device shown in Figs. 3, 4e, 5, and 6. Fig. 7 represents a sectional view of the bow and pendant, showing a differentforln of fastening device. Fig. 8 represents a sectional view of the fastening device shown in Fig. 7.

The same letters of reference indicate the same parts in all of the figures.

In the drawings, a represents the bow, and b the pendant of awatch-case. The pendant is provided at opposite points in the exterior of its periphery with sockets c 0, adapted to receive the ends of the bow, said sockets extending through the wall of the pendant and terminating in enlarged recesses c 0', formed in the outer surface of the pendant, as shown in Fig. 2. Upon the bow near its ends are formed collars or enlargements d d, the ends a a of the bow projecting inwardly from said collars and being straight, instead of partaking of the curvature of the main portion of the bow, said ends a being also in line wit-h each other, or approximately so. The ends a andcollars d are formed, respectively, to fit the sockets c and recesses c in the pendant, the said ends and collars being sprung into the sockets and recesses. It will be observed that the ends a of the bow being straight and in line with each other are arranged at an obtuse angle with the curved portion of the bow, so that when the central portion of the bow is pulled outwardly the ends a, instead of being crowded outwardly and sprung from their sockets by the force exerted in pulling on the bow, will be pressed inwardly or have a tendency Fig. 2 represents a sec to enter their sockets more deeply, the result being that the shoulders or enlargements (Z are pressed closely against the surfaces of the pendant 011 which they bear.

This improved form of bow is, for the reason above stated, less liable to be disengaged from the pendant by accidental or forcible means than bows of the ordinary form. They can of course be forcibly removed by twisting the bow by means of nippers manipulated by experts.

To prevent the possibility of withdrawal of the ends of the bow from the pendant without breaking, I extend the ends sufficiently to enable them to project into the cavity in the pendant and engage them with a securing-collar e, which is adapted to be inserted in the pendant and has a central orifice f, through which the winding-bar of the watchcase passes, said collar 6 being provided with means for engagement with the ends of the bow inside the pendant.

The means for engaging the collar with the ends of the bow may be variously modified. In Figs. 4, 5, and 6 I show the collar 6, provided with two split sockets e e at opposite sides of the collar, said sockets being split lengthwise to convert them into spring-jaws, which are formed to engage the ends of the how. The collar f is placed in position in the pendant before the bow is applied, its sockets being in line with the sockets or orifices c in the pendant, andwhen the ends of the bow are sprung into the pendant said ends snap into the sockets c and are automatically engaged by the latter, the spring-jaws having sufficient power to hold the ends of the bow with sufficient firmness to prevent their withdrawal.

Fig. 4 shows the collar in place in the pendant and engaged with the ends of the bow, while Figs 5 and 6 show the collar removed from the pendant, Fig. 5 being a perspective and Fig. 6 a sectional view of the collar. The pendant ends a are in this case preferably provided with grooves a, as shown in Fig. 6, to engage the jaws of the split sockets.

In Figs. 7 and 8 I have shown the collar e provided with two threaded sockets 7L h, one socket having a right-hand and the other a left-hand thread. The ends of the bow in this case are correspondingly threaded, one having a right and the other having a left hand thread, and said ends are engaged with the threaded sockets of the collar by holding said collar stationar T when the bow is being swung in one direction across the pendant,

the ends of the bow being the centers of the swinging motion, then allowing the collar to turn with the ends while the pendant is being swung in the opposite direction, and so on, the collar being alternately held and released while the bow is being swung back and forth until the ends of the how are screwed.

into the sockets in the collar. This opera tion must of course be performed before the winding-baris inserted in the pendant. After said bar is inserted it holds the collar so that it cannot be turned or rotated in the pendant. Of course the ends of the how can be withdrawn from the sockets in the collar e by a reversal of the above-described operation, which engages said ends with the sockets of the collar. It will be seen that the collar engaged with the inwardly-projecting ends of the bow, as abovewlescribed, in connection with the improved form of how, make the connection of the bow to the pendant very secure and comparatively inexpensive. The construction is such that the parts can be readily connected without ditliculty by a Watch-maker.

I claim as my invention 1. A watch-case-pendant bow having collars or enlargements and reduced straignt ends integral with the bow projecting inwardly from said collars, said ends being substantially in line with each other and formed at an angle with the main portion of the bow, combined with a pendant having orifices c c to receive said ends, and recesses at the outer ends of said orifices to receive the collars or enlargements of the bow, as set forth.

2. The combination of a watch-case pend ant having orifices 0 extending through its sides and enlarged recesses c at the outer ends of said orifices, a bow having collars or enlargements formed to enter said recesses, and reduced straight ends integral with the bow adapted to project through the orifices 0 into the interior of the pendant, and a socuring-collar within the pendant having sockets adapted to receive the inwardly-projecting ends of the how.

3. The combinatiomwith a watch-case pendant having bow-receiving orifices in its sides, of a bow having grooved ends inserted in said orifices and projecting through the same into the interior of the pendant, and spring-jaws within the pendant adapted to grasp and hold the grooved ends of the pendant, as set forth.

4:. The combination ,with a watch-case pendant having orifices c in its sides and a bow having grooved ends sprung through said orifices and projecting into the interior of the pendant, of a collar c within the pendant, having split sockets constituting jaws adapted to grasp, and hold the grooved ends of the pendant, as set forth.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 29th day of March, A. D. 1890.

CHARLES F. MORRILL.

Witnesses:

O. F. BROWN, A. D. HARRISON. 

